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apply water-based lubricant generously to both your penis and the internal chamber
Rotate the twist-base clockwise during thrusting to build suction
Waterproof design: Safe for shower play and easy to clean thoroughly
For expert guidance on cock ring use and selection
4M Endurance Cock Rings by Topco LifeStyles apply water-based lubricant generously toThe 4M Endurance Cock Ring by Topco combines engineered sizing with smart sensor technology to build stamina and adapt to your rhythm automatically. Ideal for solo endurance training or couples' play, it responds to your movements in real time. Why choose the 4M Endurance Cock Rings by Topco Smart sensors: Detect your movement speed and adjust pulsing automatically Progressive tightening: Intensity builds gradually as you move deeper Warming function:
